Donald d



DNALD D. MAGKAY, 0F WHITESTONE, NEW' YORK.

More Param-N0. 69,456, dans october i, 18e-rj i IMPROVEMENT IN SASH-LOOKS AND STOPS.

fitte Stimuli riferiti in iii tigen Enten Btttnt mit making pitt it the sans. f

TO ALL WHOM IT MAY CONCERN:

Be it known that I, DONALD D. MACHU, of Whitestone, in the county of Queens, and State of New York, have invented certain new and useful Improvements in Sash-Stops and Lockspiiind I do hereby declare thaty 4the following is a full, clear, and exact' description of the same, reference being hud to the accompanying drawings, making a portion of this specification, in whichs i v Figure 1 is o front viewand partial section of a window furnished with a sash-stop and lock vconstructed Y according to my invention.

Figure 2 is a detached edge View of a sash furnished with the same.

Similar letters-of reference indicate corresponding parts in both vfhgures. 4 v f i This-invention consists in a'pivoted spring-catch, a sliding operating-rod, and a laterally or outwardly projecting knob, situated in the edge of a window-sash, andarranged in relation with'each other, and withe. notch or recess formed in the side of the window-frame, in such` manner that a very effective device forlocking down the sash is secured. The invention further consists in the arrangement, with reference to the aforesaid parts of sliding friction-bars, furnished with rollers at their outer extremities', and acted upon by spiral springs,` whereby the invention may not only be employedfor locking down the sash when required,but alsov serves the purpose of retaining the same at any desired height when raised. Y

To enable others to understand the construction and operation of my invention, I will proceed to describe it with reference to the drawings. i

A represents the window-sash, and B the frame thereof. i Secured by screws or other suitable means to one of the lateral edges ofthe sash A is a longitudinal metallic plate, a, which has formedl upon` each of its ends a small box or case, a*, which receives a'sliding-bar or piece, b, as shown 1in fig. 1. The said sliding-bars-a-re furnished -at their outer ends with. small rollers, a'working on horizontal axes, and are each formed or furnished f -with inwardly-extending stems b', which pass through holes or slots in the bottom or inner ends of the cases a.l

A spiral spring, c, placed upon the steiiis b', between the main portions of the aforesaid bars or pieces b and the inner ends of the cases a, forces the said bars outward, so that the rollers a are pressed against the contiguous inner side of the window-frame B, with such force as to retain the sash at any desired elevation, as hereinafter further set forth. Formed in the plate a, at or near Vthe centre of the same, is a verticahslot, d', which communicates with a deeprecess, If, provided in the edge oi' the sash B. Working through this slot is a catch, e, which is pivoted at its lower end, as shown at e', and is pressed outward by a. spring, e*, situated within'the' recess 6*, A Sliding-rod,j`, has its outermost end pivoted to the upper extremity of the catch e, and its, oppo- .l site or innr end is furnished with o. knob, 0*, which projects laterally therefrom through a suitable slot formed in the i'ront side of the sash, as'indicated in blue outline in iig. l. v v

When the 4sash is down in the position shown in iig. 1, the catch e is forced by the springe* outward, so that it lits into a notch, f, formed in the adjacent side of the frame A, and consequently prevents the sash from being raised from the outside of the window. When it is desired to'raise these-sh, the catch e is brought inward from the recess f* by slidinr the rodfby means ofv the knob 0*, and the sash being then elevated,'the spiral springs c press the slides or bars b outward, with their rollcrspa, against the adjacent side ofthe frame B with suiiicient force to insure the retention of the sash A ut the required height, by the friction of that edge thereof opposite the one at which thc aforesaid slides or hars b are placed upon the corresponding side of the windowframe. Y I l What I claini as my invention, und desire to secure by Letters Patent, is

l, 'The Springatche, pivoted at its lower end, sliding-rod f, and knob eik, arranged in relation with the spring-rollers au, and the sash A, for operation substantially as set forth, the' Whole forming a combined sashystop and lock, as described. f A y `2. "lhe sliding-bars b, furnished with rollers c', and operated by spiral' springs c', as arranged'and operating in relation with the siish Ag'snhstantially as andtfor the purpose specified.

D. D. MAKAY.

Witnesses: N; Tucwnnn, Ji. `f J. W.- Gootnzsc 

